The Battle of Bensington was a major battle fought between Mercia, led by King Offa, and the West Saxons led by Cynewulf of Wessex. It ended with a victory for the Mercians, and the West Saxons recognizing Mercian overlordship.
Nearly nothing is known about the battle except that the Mercians defeated the West Saxons. After the battle, Cynewulf ruled his Kingdom for the next seven years until he was killed in 786, but the successor to his Kingdom, Beorhtric, accepted Offa as his overlord after he helped him gain the throne of Wessex and after Offa's death he mainly kept his word, only minting his own coinage. He died in 802 AD.